If your internet is slower than usual, then you should check if someone has hacked in your WIFI .In this post I’m going to show you two effective way to check this.
The easiest way is by using free utility called Wireless Network Watcher v1.55 .
1) Go to nirsoft.net and download Wireless Network Watcher v1.55.
2) Install it on your pc and start scanning. It scans your wireless network and displays the list of all computers and devices that are currently connected to your network.
For every computer or device that is connected to your network, the following information is displayed: IP address, MAC address, the company that manufactured the network card, and optionally the computer name.
If you want to check if someone has hacked in your WIFI without installing any software then you should log in your router . If anyone is connected to your network it will be shown in your router security settings. You can log into your router, usually http://192.168.1.1 . You can check your router ip address using command prompt
1) Run command prompt (cmd)
ipconfig and press enter
4)Log in your router and look at the Home Network -> Devices, this shows all IP addresses connected to your network.